diff --git a/components/selectors/builder.rs b/components/selectors/builder.rs
index 4e295a1598f..0bf894a72b5 100644
--- a/components/selectors/builder.rs
+++ b/components/selectors/builder.rs
@@ -17,7 +17,7 @@
 //! is non-trivial. This module encapsulates those details and presents an
 //! easy-to-use API for the parser.
 
-use crate::parser::{Combinator, Component, NonTSPseudoClass, SelectorImpl};
+use crate::parser::{Combinator, Component, SelectorImpl};
 use crate::sink::Push;
 use servo_arc::{Arc, HeaderWithLength, ThinArc};
 use smallvec::{self, SmallVec};
@@ -322,14 +322,10 @@ where
             Component::NthLastOfType(..) |
             Component::FirstOfType |
             Component::LastOfType |
-            Component::OnlyOfType => {
+            Component::OnlyOfType |
+            Component::NonTSPseudoClass(..) => {
                 specificity.class_like_selectors += 1;
             },
-            Component::NonTSPseudoClass(ref pseudo) => {
-                if !pseudo.has_zero_specificity() {
-                    specificity.class_like_selectors += 1;
-                }
-            },
             Component::Is(ref list) => {
                 // https://drafts.csswg.org/selectors/#specificity-rules:
                 //
diff --git a/components/selectors/parser.rs b/components/selectors/parser.rs
index 8f87c785f3e..a1dcd119bf5 100644
--- a/components/selectors/parser.rs
+++ b/components/selectors/parser.rs
@@ -53,9 +53,6 @@ pub trait NonTSPseudoClass: Sized + ToCss {
     /// https://drafts.csswg.org/selectors-4/#useraction-pseudos
     fn is_user_action_state(&self) -> bool;
 
-    /// Whether this pseudo-class has zero specificity.
-    fn has_zero_specificity(&self) -> bool;
-
     fn visit<V>(&self, _visitor: &mut V) -> bool
     where
         V: SelectorVisitor<Impl = Self::Impl>,
@@ -2564,11 +2561,6 @@ pub mod tests {
         fn is_user_action_state(&self) -> bool {
             self.is_active_or_hover()
         }
-
-        #[inline]
-        fn has_zero_specificity(&self) -> bool {
-            false
-        }
     }
 
     impl ToCss for PseudoClass {